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Simulation calculation method of inductive voltage and current of parallel AC transmission line based on ATP-EMTP

An ATP-EMTP, transmission line technology, applied in current/voltage measurement, calculation, design optimization/simulation, etc., can solve problems such as high induced voltage and induced current, endangering personal and equipment safety, etc.

Pending Publication Date: 2019-01-08
STATE GRID ANHUI ELECTRIC POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not uncommon for multiple lines to use one transmission corridor. Due to the complex electrostatic coupling and electromagnetic coupling between transmission lines, quite high induced voltage and induced current will be generated on the maintenance line during power outages, seriously endangering the safety of people and equipment.

Method used

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  • Simulation calculation method of inductive voltage and current of parallel AC transmission line based on ATP-EMTP
  • Simulation calculation method of inductive voltage and current of parallel AC transmission line based on ATP-EMTP

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Embodiment Construction

[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] The invention combines CDEGS software to simulate and calculate the induced current and induced voltage of the transmission line.

[0024] The simulation calculation method of the induced voltage and current of the AC parallel transmission line includes the following steps:

[0025] Step 1. Obtain electrical basic parameters

[0026] 1) Obtain the parameters of the transmission line involved, including the transmission line model, inner diameter, outer diameter, split number, DC resistance, split spacing, sag, phase sequence, etc.;

[0027] 2) Obtain the ground wire parameters involved, including ground wire model, inner diameter, outer diameter, sag, DC resistance, etc.;

[0028] 3) Obtain the parameters of the transmission tower involved, including the tower model, height, span, suspension poin...

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Abstract

The invention provides a simulation calculation method of inductive voltage and current of a parallel AC transmission line based on ATP-EMTP is presented. A model is established by ATP-EMTP simulationsoftware, according to the parameters of a transmission line, a ground line, a transmission tower and soil resistivity along the transmission line, transmission line relevant parameters in the ATP-EMTP software are set, and the line model is established. According to the operating parameters of live transmission line, voltage source and current source are set up at both ends of live transmissionline to calculate the electrostatic induction voltage, electrostatic induction current, electromagnetic induction voltage and electromagnetic induction current of construction line. This method can accurately evaluate the inductive voltage and inductive current on the parallel AC transmission line, timely do safety measures, and improve the safety operation ability of the transmission line staff.

Description

technical field [0001] The invention relates to the field of simulation calculation of power transmission lines, in particular to a simulation calculation method for induced voltage and current of parallel AC transmission lines based on ATP-EMTP. Background technique [0002] With the construction of more and more high-voltage and ultra-high-voltage transmission lines, while saving line corridors and reducing urban land occupation, it is inevitable that transmission lines will run parallel and cross across. It is not uncommon for multiple lines to use one transmission corridor. Due to the complex electrostatic coupling and electromagnetic coupling between transmission lines, quite high induced voltages and induced currents will be generated on power outage maintenance lines, seriously endangering the safety of people and equipment. [0003] According to the research, the induced voltage of the adjacent UHV AC transmission line can reach tens of kilovolts, and the induced cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01R19/00
CPCG01R19/00G06F30/20
Inventor 刘勇刘承志任红昕郭鑫孙明刚陈曦鸣马雷王军燕王鹏张金锋刘汝伟李亮席照才李迎春
Owner STATE GRID ANHUI ELECTRIC POWER CO LTD